As to low productivity, this may be psychological as much as real. I get the impression that everything happens faster on my Win2000 system (Athlon 1.2GH, 392MB) box than the Xandros (Athlon 2.1GHz, 256MB) box - Win2000 loads in 70% of the time of Xandros despite the slower older system.
I sometimes think that my PII 450 is 'faster' than the PIII 500 - because the display is snappier. So, could be an X-windows issue. Again, something more easily sorted out while sat in front of the box itself.
Also, Win 2000 *loads* faster than the mandrake box - but I prefer *using* mandrake once up and running. In practice I leave mdk running all the time anyway so it's not an issue.
Syd